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常有老人因动手为家中电冰箱或或冰柜除霜而造成意外残废、死亡的报告。经社会调查发现,不少人在除霜时发生头痛、晕眩、恶心呕吐、肢体麻木等现象。一些人不明真相,认为这是由于冷冻设备的秽物臭气所致,更有人借此散布迷信思想,这到底是怎么一回事呢?专家们为此做了一个“寒冷加压”实验,将几个不同年龄的健康人的手浸入冰水之中,经3分钟后测量发现,毛细血管及小动脉便很快收缩,血压迅速升高。而年龄较大的中老年人,血压升得更是又快又高,血压平均提升3.9～2.7千帕(20～30毫米汞柱)。由此得出结论,除霜者头痛、晕眩甚至死亡是由寒冷造成血压骤升所致。
Often, elderly people report accidental disability and death due to defrosting of refrigerators or freezers at home. Society survey found that many people in the defrost headache, dizziness, nausea, vomiting, numbness and other phenomena. Some people do not know the truth, that this is due to the odor of frozen equipment caused by odor, but also to spread superstition ideas, in the end is how the matter? Experts have done for this a “cold and pressurized” experiment, Will be several different ages of healthy people’s hands immersed in ice water, measured after 3 minutes found that capillaries and arterioles will quickly shrink, rapid increase in blood pressure. The older middle-aged and elderly, blood pressure is more rapid and high rise, blood pressure increased by 3.9 to 2.7 kPa (20 to 30 mm Hg). It concluded that defrost headache, dizziness or even death caused by the sudden surge of blood pressure caused by the cold.